Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf34379c898f5bc9…

MALICIOUS

PDF

71.4 KB Created: 2021-02-11 00:39:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e4c2075db376ade514430edc6c181493 SHA-1: e639422a45530f643e4951cd20e3305718c99662 SHA-256: cf34379c898f5bc97087956768b5c1df649f5792902f300bdb976c0eca6ce8fa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://leonvi.ru/wb?keyword=treatment%20guideline%20for%20h%20pylori PDF link annotation
    • https://jexafowasefuxuv.weebly.com/uploads/1/3/4/5/134588667/4788117.pdfIn PDF document text
    • http://dreabling.online/60237129522qid3b.pdfIn PDF document text
    • https://cdn.sqhk.co/pidodalatip/ggQgigj/9233405434.pdfIn PDF document text
    • http://boothattendant.com/mazumijidpo4g.pdfIn PDF document text
    • http://sushibara.net/77459619539edzs8.pdfIn PDF document text
    • http://b4shop.icu/kikagajar8psnx.pdfIn PDF document text
    • http://surogufepisim.iblogger.org/level_1_warlock_5e_character_sheet.pdfIn PDF document text
    • http://topstop.site/95808024728vcyhn.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/c1rEJii/zikixumonexesoj.pdfIn PDF document text
    • https://cdn.sqhk.co/sebidurubuze/khihbeW/banana_shake_recipe_easy.pdfIn PDF document text
    • http://gogotmif.space/medical_mycology_mcq_with_answers9mkx3.pdfIn PDF document text
    • http://regvoolkim.website/39223042387wxv9h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fapugemuxo.epizy.com/christine_1983_full_movie.pdfIn PDF document text
    • http://ronufabadexulab.epizy.com/drama_korea_cheer_up_subtitle_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/40504473094.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA2 5328 bytes
SHA-256: 42d8374590fb605a87160292dcea551a8686f36071cae6607b44a155902cece1
font_01_sfnt_off0000ed9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9F 10268 bytes
SHA-256: 71bfb9cc0da17e69c6ab7d6a54961b38217046d9c27dd363ef0c6ac0cbe7a3a9